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1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  
28  package org.apache.hc.core5.http.message;
29  
30  import org.apache.hc.core5.http.Header;
31  import org.apache.hc.core5.util.CharArrayBuffer;
32  
33  /**
34   * Interface for formatting elements of the HEAD section of an HTTP message.
35   * There are individual methods for formatting a request line, a
36   * status line, or a header line. The formatting methods are expected to produce
37   * one line of formatted content that does <i>not</i> include a line delimiter
38   * (such as CR-LF). Instances of this interface are expected to be stateless and
39   * thread-safe.
40   *
41   * @since 4.0
42   */
43  public interface LineFormatter {
44  
45      /**
46       * Formats a request line.
47       *
48       * @param buffer    buffer to write formatted content to.
49       * @param reqline   the request line to format
50       */
51      void formatRequestLine(CharArrayBuffer buffer, RequestLine reqline);
52  
53      /**
54       * Formats a status line.
55       *
56       * @param buffer    buffer to write formatted content to.
57       * @param statline  the status line to format
58       */
59      void formatStatusLine(CharArrayBuffer buffer, StatusLine statline);
60  
61      /**
62       * Formats a header.
63       *
64       * @param buffer    buffer to write formatted content to.
65       * @param header    the header to format
66       */
67      void formatHeader(CharArrayBuffer buffer, Header header);
68  
69  }